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我们试图利用卓有成效的结构程序设计方法——有序分层法,以及进程和管程概念来设计计算机通信网络中的软件,以便获得一性能良好、工作可靠和结构清晰的网络软件。 本文共分七小节:(1)现代计算机通信网络软件的特点;(2)x·25链路级协议;(3)公用缓冲池的管理;(4)接收进程及其实现;(5)次站进程及其实现;(6)主站进程其其实现;(7)发送进程及其实现。 随着计算机网络的发展,目前已出现一种趋向,从逻辑功能上把数据处理和数据通讯分开,形成了数据处理网(又称计算机资源网络或资源子网)、和数据通信网(又称计算机通信网络或通信子网)两级计算机网络。例如:ARPA网络通信线路把各地的接口信息处理机IMP连接起来,形成通信子网,与通信子网相连的各种资源(包括大量的主机系统、终端设备以及各种软件)构成资源子网。
We tried to design software in a computer communication network using the well-structured method of structured programming - the orderly tiering method and the concept of processes and processes - to get a good, reliable and clearly structured network software. This article is divided into seven sections: (1) the characteristics of modern computer communication network software; (2) x25 link-level protocol; (3) public pool management; (4) the receiving process and its implementation; Station process and its realization; (6) the main station process its realization; (7) sending process and its realization. With the development of computer networks, there has been a tendency to separate data processing and data communication from logical functions to form a data processing network (also known as a computer resource network or a resource subnet) and a data communication network Computer communication network or communication subnet) two levels of computer networks. For example, an ARPA network communication line connects IMPs of various interface information processors to form a communication subnet, and various resources (including a large number of host systems, terminal devices and various softwares) connected to the communication subnet constitute a resource subnet.